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Finding the Fourth Proportional to 88,116.40, 131,955.90 and 70,620.40

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Solution

The fourth proportional to 88,116.40, 131,955.90 and 70,620.40 is: 105,755.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,116.40 : 131,955.90 = 70,620.40 : x
  2. Step 2: Convert to fraction form
    88,116.40/131,955.90 = 70,620.40/x
  3. Step 3: Cross multiply
    88,116.40x = 131,955.90 × 70,620.40
  4. Step 4: Simplify right side
    88,116.40x = 9,318,778,440.36
  5. Step 5: Solve for x
    x = 9,318,778,440.36/88,116.40
  6. Step 6: Final answer
    x = 105,755.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.